1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.messaging.util;
import android.content.Context;
import android.content.res.Resources;
import android.support.v4.view.accessibility.AccessibilityEventCompat;
import android.support.v4.view.accessibility.AccessibilityRecordCompat;
import android.text.TextUtils;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import com.android.messaging.Factory;
import com.android.messaging.R;
import javax.annotation.Nullable;
public class AccessibilityUtil {
public static String sContentDescriptionDivider;
public static boolean isTouchExplorationEnabled(final Context context) {
final AccessibilityManager accessibilityManager = (AccessibilityManager)
context.getSystemService(Context.ACCESSIBILITY_SERVICE);
return accessibilityManager.isTouchExplorationEnabled();
}
public static StringBuilder appendContentDescription(final Context context,
final StringBuilder contentDescription, final String val) {
if (sContentDescriptionDivider == null) {
sContentDescriptionDivider =
context.getResources().getString(R.string.enumeration_comma);
}
if (contentDescription.length() != 0) {
contentDescription.append(sContentDescriptionDivider);
}
contentDescription.append(val);
return contentDescription;
}
public static void announceForAccessibilityCompat(
final View view, @Nullable final AccessibilityManager accessibilityManager,
final int textResourceId) {
final String text = Factory.get().getApplicationContext().getResources().getString(
textResourceId);
announceForAccessibilityCompat(view, accessibilityManager, text);
}
public static void announceForAccessibilityCompat(
final View view, @Nullable AccessibilityManager accessibilityManager,
final CharSequence text) {
final Context context = view.getContext().getApplicationContext();
if (accessibilityManager == null) {
accessibilityManager = (AccessibilityManager) context.getSystemService(
Context.ACCESSIBILITY_SERVICE);
}
if (!accessibilityManager.isEnabled()) {
return;
}
// Jelly Bean added support for speaking text verbatim
final int eventType = OsUtil.isAtLeastJB() ? AccessibilityEvent.TYPE_ANNOUNCEMENT
: AccessibilityEvent.TYPE_VIEW_FOCUSED;
// Construct an accessibility event with the minimum recommended
// attributes. An event without a class name or package may be dropped.
final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
event.getText().add(text);
event.setEnabled(view.isEnabled());
event.setClassName(view.getClass().getName());
event.setPackageName(context.getPackageName());
// JellyBean MR1 requires a source view to set the window ID.
final AccessibilityRecordCompat record = AccessibilityEventCompat.asRecord(event);
record.setSource(view);
// Sends the event directly through the accessibility manager. If we only supported SDK 14+
// we could have done:
// getParent().requestSendAccessibilityEvent(this, event);
accessibilityManager.sendAccessibilityEvent(event);
}
/**
* Check to see if the current layout is Right-to-Left. This check is only supported for
* API 17+.
* For earlier versions, this method will just return false.
* @return boolean Boolean indicating whether the currently locale is RTL.
*/
public static boolean isLayoutRtl(final View view) {
if (OsUtil.isAtLeastJB_MR1()) {
return View.LAYOUT_DIRECTION_RTL == view.getLayoutDirection();
} else {
return false;
}
}
public static String getVocalizedPhoneNumber(final Resources res, final String phoneNumber) {
if (TextUtils.isEmpty(phoneNumber)) {
return "";
}
final StringBuilder vocalizedPhoneNumber = new StringBuilder();
for (final char c : phoneNumber.toCharArray()) {
getVocalizedNumber(res, c, vocalizedPhoneNumber);
}
return vocalizedPhoneNumber.toString();
}
public static void getVocalizedNumber(final Resources res, final char c,
final StringBuilder builder) {
switch (c) {
case '0':
builder.append(res.getString(R.string.content_description_for_number_zero));
builder.append(" ");
return;
case '1':
builder.append(res.getString(R.string.content_description_for_number_one));
builder.append(" ");
return;
case '2':
builder.append(res.getString(R.string.content_description_for_number_two));
builder.append(" ");
return;
case '3':
builder.append(res.getString(R.string.content_description_for_number_three));
builder.append(" ");
return;
case '4':
builder.append(res.getString(R.string.content_description_for_number_four));
builder.append(" ");
return;
case '5':
builder.append(res.getString(R.string.content_description_for_number_five));
builder.append(" ");
return;
case '6':
builder.append(res.getString(R.string.content_description_for_number_six));
builder.append(" ");
return;
case '7':
builder.append(res.getString(R.string.content_description_for_number_seven));
builder.append(" ");
return;
case '8':
builder.append(res.getString(R.string.content_description_for_number_eight));
builder.append(" ");
return;
case '9':
builder.append(res.getString(R.string.content_description_for_number_nine));
builder.append(" ");
return;
default:
builder.append(c);
return;
}
}
}
|
